Care has been taken to ensure that this information is accurate, but Corus Group plc, including its subsidiaries, does not accept responsibility or liability for errors or information which is found to be misleading. References are to Corus publication Design of SHS welded joints

Care has been taken to ensure that this information is accurate, but Corus Group plc, including its subsidiaries, does not accept responsibility or liability for errors or information which is found to be misleading. Chord face deformation Note: Brace 1 usually designated compression and brace 2 tension. Compression brace (1): ( ) ( )p01120 0 yRd , 1n f g fdd2 . 10 8 . 1sint fN ||.|

Care has been taken to ensure that this information is accurate, but Corus Group plc, including its subsidiaries, does not accept responsibility or liability for errors or information which is found to be misleading.

CHS chord end load function f(np) Using formulae: Using graph:

0 . 1 butf3 . 0f3 . 0 1 ) n ( f20 yp0 ypp

||.|

\|

+ =

where;

CHS chord least compressive stress p;

0 , el20 , op20 , ip00 , ppWM MAN + =

Note: Moment part is additive to compressive stress which is negative, hence minus sign for moments. For CHS chords use least compressive chord stress.

2p10 1 . 811000 1000

=

2pmm / N 30 . 123 =

2p3553 . 1233 . 03553 . 1233 . 0 1 ) n ( f |.|

\|

+ =

0 . 1 860 . 0 ) n ( fp =

where;

CHS chord least compressive stress p;

0 , el20 , op20 , ip00 , ppWM MAN + =

Note: Moment part is additive to compressive stress which is negative, hence minus sign for moments. For CHS chords use least compressive chord stress.

Care has been taken to ensure that this information is accurate, but Corus Group plc, including its subsidiaries, does not accept responsibility or liability for errors or information which is found to be misleading. 860 . 0 761 . 11 . 2197 . 1392 . 10 8 . 145 sin5 . 12 355N2Rd , 1 |.|

Care has been taken to ensure that this information is accurate, but Corus Group plc, including its subsidiaries, does not accept responsibility or liability for errors or information which is found to be misleading. References are to Corus publication Design of SHS welded joints -500 kN -1000 kNCHS 219.1x12.5All material EN 10210 S355J2HCHS 139.7x5.0 400 kN-1636 kNCHS 114.3x3.64545 -45e = -42.2

Care has been taken to ensure that this information is accurate, but Corus Group plc, including its subsidiaries, does not accept responsibility or liability for errors or information which is found to be misleading. Chord face deformation Note: Brace 1 usually designated compression and brace 2 tension. Compression brace (1): ( ) ( )p01120 0 yRd , 1n f g fdd2 . 10 8 . 1sint fN ||.|

Care has been taken to ensure that this information is accurate, but Corus Group plc, including its subsidiaries, does not accept responsibility or liability for errors or information which is found to be misleading.

CHS chord end load function f(np) Using formulae: Using graph:

0 . 1 butf3 . 0f3 . 0 1 ) n ( f20 yp0 ypp

||.|

\|

+ =

where;

CHS chord least compressive stress p;

0 , el20 , op20 , ip00 , ppWM MAN + =

Note: Moment part is additive to compressive stress which is negative, hence minus sign for moments. For CHS chords use least compressive chord stress.

2p10 1 . 811000 1000

=

2pmm / N 30 . 123 =

2p3553 . 1233 . 03553 . 1233 . 0 1 ) n ( f |.|

\|

+ =

0 . 1 860 . 0 ) n ( fp =

where;

CHS chord least compressive stress p;

0 , el20 , op20 , ip00 , ppWM MAN + =

Note: Moment part is additive to compressive stress which is negative, hence minus sign for moments. For CHS chords use least compressive chord stress.

Care has been taken to ensure that this information is accurate, but Corus Group plc, including its subsidiaries, does not accept responsibility or liability for errors or information which is found to be misleading.

Care has been taken to ensure that this information is accurate, but Corus Group plc, including its subsidiaries, does not accept responsibility or liability for errors or information which is found to be misleading. References are to Corus publication Design of SHS welded joints

Care has been taken to ensure that this information is accurate, but Corus Group plc, including its subsidiaries, does not accept responsibility or liability for errors or information which is found to be misleading.

Care has been taken to ensure that this information is accurate, but Corus Group plc, including its subsidiaries, does not accept responsibility or liability for errors or information which is found to be misleading. Bracing Effective width brace 1

Care has been taken to ensure that this information is accurate, but Corus Group plc, including its subsidiaries, does not accept responsibility or liability for errors or information which is found to be misleading. Brace 2 Repeat brace capacity formulae for brace 2.

Note: As both braces are of same geometry, brace 2 capacity will be the same:

Care has been taken to ensure that this information is accurate, but Corus Group plc, including its subsidiaries, does not accept responsibility or liability for errors or information which is found to be misleading. Chord axial load resistance in gap Chord: Axial load in gap (valid when V 0.5 Vp)

Care has been taken to ensure that this information is accurate, but Corus Group plc, including its subsidiaries, does not accept responsibility or liability for errors or information which is found to be misleading. References are to Corus publication Design of SHS welded joints -600 kN -1000 kN -1849 kNSHS 200 x 200 x 10All material EN 10210 S355J2HSHS 120 x 120 x 5600 kN4545 70i j -50.1

Care has been taken to ensure that this information is accurate, but Corus Group plc, including its subsidiaries, does not accept responsibility or liability for errors or information which is found to be misleading. Bracing Effective width Note: Only the overlapping brace (i) need be checked. The capacity of the overlapped brace (j) is based on on an efficiency ratio to that of the overlapping brace.

Care has been taken to ensure that this information is accurate, but Corus Group plc, including its subsidiaries, does not accept responsibility or liability for errors or information which is found to be misleading.

Care has been taken to ensure that this information is accurate, but Corus Group plc, including its subsidiaries, does not accept responsibility or liability for errors or information which is found to be misleading. References are to Corus publication Design of SHS welded joints

For simplicity only the moment in plane capacity calculations are shown as other examples cover axial capacity. Axial and moment out of plane capacity would need to be calculated and included in the interaction check.

Care has been taken to ensure that this information is accurate, but Corus Group plc, including its subsidiaries, does not accept responsibility or liability for errors or information which is found to be misleading. Chord face deformation (Valid when 0.85)

0 . 1150150bb01= = = Check not required

Although this check is not required in this particular case, the calculation for chord end load function is shown for information as it includes moments;

RHS chord end load function f(n) Using formulae: Using graph:

( ) 0 . 1 butf4 . 03 . 1 n f0 y0

+ =

where;

RHS chord most compressive stress 0;

0 , op , el0 , op0 , ip , el0 , ip000WMWMAN+ + =

Note: Moment part is additive to compressive stress which is negative, hence minus sign for moments. For RHS chords use most compressive chord stress.

3 2010 2361000 1000 8 . 3510 9 . 541000 136

=

20mm / N 47 . 176 =

( ) ( )0 . 10 . 1 35547 . 176 4 . 03 . 1 n f

+ =

( ) 0 . 1 ) n ( f 0 . 1 but 101 . 1 n f = =

where;

RHS chord most compressive stress 0;

0 , op , el0 , op0 , ip , el0 , ip000WMWMAN+ + =

Note: Moment part is additive to compressive stress which is negative, hence minus sign for moments. For RHS chords use most compressive chord stress.

3 2010 2361000 1000 8 . 3510 9 . 541000 136

=

20mm / N 47 . 176 =

RHS chord stress ratio;

497 . 035547 . 176f0 y0 =

from graph;

for 0 . 1150150bb0i= =

f(n) = 1.101 (However, not required in this case as chord deformation not critical as >0.85)

Care has been taken to ensure that this information is accurate, but Corus Group plc, including its subsidiaries, does not accept responsibility or liability for errors or information which is found to be misleading. Chord side wall crushing (Valid when 0.85 < 1.0)

Care has been taken to ensure that this information is accurate, but Corus Group plc, including its subsidiaries, does not accept responsibility or liability for errors or information which is found to be misleading. Summary Moment in plane Joint moment in-plane capacity dictated by chord side wall failure.